/*
 * Copyright 2022-2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.instancio.internal.util;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ServiceLoader;

public final class ServiceLoaders {

    private ServiceLoaders() {
        // non-instantiable
    }

    public static <T> List<T> loadAll(final Class<T> spi) {
        final ServiceLoader<T> serviceLoader = ServiceLoader.load(spi, getClassLoader());
        final List<T> providers = new ArrayList<>();
        for (T service : serviceLoader) {
            providers.add(service);
        }
        return Collections.unmodifiableList(providers);
    }

    private static ClassLoader getClassLoader() {
        final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
        return classLoader == null ? ClassLoader.getSystemClassLoader() : classLoader;
    }
}
